The External Ear Canal Lining Is Protected and Lubricated with Cerumen

question 27

Multiple Choice

The external ear canal lining is protected and lubricated with cerumen (earwax) ,which traps foreign material and:

• A) liquefies foreign matter in the ear canal.
• B) lubricates the external ear.
• C) maintains the acidic pH in the ear canal.
• D) reduces bacterial levels in the outer ear.

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